migration: make resource_key nullable

data/database.py

@@ -521,7 +521,7 @@ class RepositoryBuild(BaseModel):
   uuid = CharField(default=uuid_generator, index=True)
   repository = ForeignKeyField(Repository, index=True)
   access_token = ForeignKeyField(AccessToken)
-  resource_key = CharField(index=True)
+  resource_key = CharField(index=True, null=True)
   job_config = TextField()
   phase = CharField(default=BUILD_PHASE.WAITING)
   started = DateTimeField(default=datetime.now)

data/migrations/versions/31288f79df53_make_resource_key_nullable.py

@@ -0,0 +1,30 @@
+"""make resource_key nullable
+
+Revision ID: 31288f79df53
+Revises: 214350b6a8b1
+Create Date: 2015-03-23 14:34:04.816295
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '31288f79df53'
+down_revision = '214350b6a8b1'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+def upgrade(tables):
+    ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('repositorybuild', 'resource_key',
+               existing_type=mysql.VARCHAR(length=255),
+               nullable=True)
+    ### end Alembic commands ###
+
+
+def downgrade(tables):
+    ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('repositorybuild', 'resource_key',
+               existing_type=mysql.VARCHAR(length=255),
+               nullable=False)
+    ### end Alembic commands ###